Question

Isaac invents a machine that helps him mow the lawn. The work output of the machine is 10 foot-pounds. The work input is 20 foot-pounds. What is the efficiency of Isaac's machine?I realy need help with this plz help me with thisI dont want to fail physics

a.)1
b.)2
c.)5
d.)0.5

Answer 1

D.

Step-by-step explanation:

I just answered the same question and got it right.